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    Linear triene and copolymer thereof
    3.
    发明公开
    Linear triene and copolymer thereof 有权
    Lineares Trien sowie共聚物davon

    公开(公告)号：EP0962437A1

    公开(公告)日：1999-12-08

    申请号：EP99109307.1

    申请日：1999-05-28

    申请人： MITSUI CHEMICALS, INC.

    发明人： Maeda, Ken ,  Yasuda, Masaaki ,  Fujita, Terunori ,  Okada, Keiji ,  Kamimura, Makoto ,  Takimoto, Kazuyuki ,  Murakami, Hidetatsu ,  Kawasaki, Masaaki ,  Watanabe, Keiji

    IPC分类号： C07C11/21 ,  C07C2/04 ,  C08F236/22

    CPC分类号： C08F236/22 ,  C07C2/04 ,  C07C11/21 ,  C07C2527/24 ,  C07C2531/14

    摘要： A novel and useful linear triene compound represented by the following formula (1) is co-polymerized with an α -olefin to obtain an ethylenically unsaturated copolymer which is superior in weatherability, heat resitance and fastness to ozone, together with superior scorch stability and vulcanizability at high velocity.
    in which R 1 , R 2 , R 3 , R 4 , R 5 and R 6 stand each, independently of each other, for hydrogen atom or an alkyl having 1 - 3 carbon atoms, R 7 represents an alkyl having 1 - 3 carbon atoms and n is an integer of 0 - 5, with the proviso that each of R 4 s or of R 5 s may be identical with or different from each other, respectively, when n is 2 or greater.

    摘要翻译： 将由下式（1）表示的新型有用的线性三烯化合物与α-烯烃共聚以获得耐候性，耐热性和耐臭氧性优异的烯键式不饱和共聚物，以及优异的焦烧稳定性和硫化性 在高速度。 其中R 1，R 2，R 3，R 4，R 5和R 6各自独立地为氢原子或具有1个 - 3个碳原子，R 7表示具有1-3个碳原子的烷基，n是0-5的整数，条件是R 4或R 5中的每一个可以与 或者当n为2以上时，分别相互不同。

    Method of preparation of 4-hydroxy-1,2,2,6,6-pentamethylpiperidine
    4.
    发明公开
    Method of preparation of 4-hydroxy-1,2,2,6,6-pentamethylpiperidine 失效
    Verfahren zur Herstellung von 4-羟基-1,2,2,6,6， - 五甲基哌啶

    公开(公告)号：EP0837057A1

    公开(公告)日：1998-04-22

    申请号：EP97308184.7

    申请日：1997-10-15

    申请人： Mitsui Chemicals, Inc.

    发明人： Yasuda, Masaaki

    IPC分类号： C07D211/46

    CPC分类号： C07D211/46

    摘要： A method for preparing 4-hydroxy-1,2,2,6,6-pentamethylpiperidine which method comprises the following steps:

    (i) reacting 4-hydroxy-2,2,6,6-tetramethylpiperidine with a compound selected from formaldehyde, paraformaldehyde and trioxane, optionally in the presence of formic acid;
    (ii) neutralising the reaction product obtained in step (i) by adding a base thereto to obtain a crude product and an aqueous layer; and
    (iii) after the neutralisation, separating the crude product from the aqueous layer and crystallising and filtering the crude product to obtain crystals of 4-hydroxy-1,2,2,6,6-pentamethylpiperidine having a water content of 3% by weight or less.

    摘要翻译： 一种制备4-羟基-1,2,2,6,6-五甲基哌啶的方法，该方法包括以下步骤：（i）使4-羟基-2,2,6,6-四甲基哌啶与选自甲醛， 多聚甲醛和三恶烷，任选在甲酸存在下; （ii）通过向其中加入碱来中和步骤（i）中获得的反应产物，得到粗产物和水层; 和（iii）中和后，将粗产物与水层分离并结晶并过滤粗产物，得到水含量为3％的4-羟基-1,2,2,6,6-五甲基哌啶晶体，通过 重量以下。